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Author |
Williams G D, Hindell M, Houssais M-N, Tamura T, Field I C, |
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Journal Article |
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Year |
2011 |
Publication |
Ocean Sci. |
Abbreviated Journal |
1812-0784 |
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Volume |
7 |
Issue |
2 |
Pages |
185-202 |
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452 |
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Copernicus Publications |
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1812-0792 |
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yes |
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3603 |
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Author |
Biermann L, Guinet C, Bester M, Brierley A, Boehme L, |
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Title |
An alternative method for correcting fluorescence quenching |
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Journal Article |
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Year |
2015 |
Publication |
Ocean Sci. |
Abbreviated Journal |
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Volume |
11 |
Issue |
1 |
Pages |
83-91 |
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Abstract |
Under high light intensity, phytoplankton protect their photosystems from bleaching through non-photochemical quenching processes. The consequence of this is suppression of fluorescence emission, which must be corrected when measuring in situ yield with fluorometers. We present data from the Southern Ocean, collected over five austral summers by 19 southern elephant seals tagged with fluorometers. Conventionally, fluorescence data collected during the day (quenched) were corrected using the limit of the mixed layer, assuming that phytoplankton are uniformly mixed from the surface to this depth. However, distinct deep fluorescence maxima were measured in approximately 30% of the night (unquenched) data. To account for the evidence that chlorophyll is not uniformly mixed in the upper layer, we propose correcting from the limit of the euphotic zone, defined as the depth at which photosynthetically available radiation is ~ 1% of the surface value. Mixed layer depth exceeded euphotic depth over 80% of the time. Under these conditions, quenching was corrected from the depth of the remotely derived euphotic zone Zeu, and compared with fluorescence corrected from the depth of the density-derived mixed layer. Deep fluorescence maxima were evident in only 10% of the day data when correcting from mixed layer depth. This was doubled to 21% when correcting from Zeu, more closely matching the unquenched (night) data. Furthermore, correcting from Zeu served to conserve non-uniform chlorophyll features found between the 1% light level and mixed layer depth. |
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109 |
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1812-0792 |
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yes |
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6304 |
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Author |
Philip L. Woodworth |
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Title |
The global distribution of the M1 ocean tide |
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Journal |
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Year |
2019 |
Publication |
Ocean Science |
Abbreviated Journal |
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Volume |
15 |
Issue |
2 |
Pages |
431-442 |
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Abstract |
The worldwide distribution of the small degree-3 M1 ocean tide is investigated using a quasi-global data set of over 800 tide gauge records and a global tide model. M1 is confirmed to have a geographical variation in the Atlantic consistent with the suggestion of Platzman (1984b) and Cartwright (1975) that M1 is generated in the ocean as a consequence of the spatial and temporal overlap of M1 in the tidal potential and one (or at least a small number of) diurnal ocean normal mode(s). As a consequence, it is particularly strong around the UK and on North Sea coasts (amplitudes ?10?mm). This analysis shows that their suggestion is also consistent to a great extent with the observed small amplitudes in the Pacific and Indian oceans. However, there are differences at the regional and local level which require much further study via more sophisticated ocean tidal modelling. By contrast, what is called the M1' tide (a combination of several degree-2 lines in the tidal potential with frequencies close to that of M1) is shown to have a geographical distribution consistent with expectations from other degree-2 diurnal tides, apart from locations such as around the UK where tidal interactions introduce complications. As far as I know, this is the first time that these small tidal constituents have been mapped on a global basis and, in particular, the first time that the ocean response to the degree-3 component of the tidal potential has been investigated globally. |
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688 |
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1812-0784 |
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yes |
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Serial |
8615 |
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Author |
E. Crubezy, O. Melnichuk, A. Alexeev |
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Journal |
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Year |
2020 |
Publication |
Vestnik arheologii, antropologii i etnografii |
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4 (51) |
Pages |
110-119 |
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Abstract |
For the past 15 years, our research has focused on the evolution of the first Yakut populations, their interaction with local tribes as well as with the Russian population, which marks the beginning of Yakutia's development from the first half of the 17th century. We conducted the excavation of tombs and we analysed the cultural, historical and paleogenetic data uncovered. A review and a synthesis of the main results published in articles and monographs informs our research directions for the future. |
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1038 |
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Bachelor's thesis |
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ISSN |
1811-7465 |
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yes |
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Call Number |
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Serial |
7936 |
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Title |
Diversity of bacteria producing pigmented colonies in aerosol, snow and soil samples from remote glacial areas (Antarctica, Alps and Andes)
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Journal Article |
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Year |
2008 |
Publication |
Biogeosciences Discuss. |
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5 |
Issue |
2 |
Pages |
1607-1630 |
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Abstract |
Four different communities and one culture of pigmented microbial assemblages were obtained by incubation in mineral medium of samples collected from high elevation snow in the Alps (Mt. Blanc area) and the Andes (Nevado Illimani summit, Bolivia), from Antarctic aerosol (French station Dumont d'Urville) and a maritime Antarctic soil (King George Island, South Shetlands, Uruguay Station Artigas). Molecular analysis of more than 200 16S rRNA gene sequences showed that all cultured cells belong to the Bacteria domain. The phylogenetic comparison with the currently available rDNA database allowed the identification of sequences belonging to Proteobacteria (Alpha-, Beta- and Gamma-proteobacteria), Actinobacteria and Bacteroidetes phyla. The Andes snow culture was the richest in bacterial diversity (eight microorganisms identified) and the maritime Antarctic soil the poorest (only one). Snow samples from Col du midi (Alps) and the Andes shared the highest number of identified microorganisms (Agrobacterium, Limnobacter, Aquiflexus and two uncultured Alphaproteobacteria clones). These two sampling sites also shared four sequences with the Antarctic aerosol sample (Limnobacter, Pseudonocardia and an uncultured Alphaproteobacteria clone). The only microorganism identified in the maritime Antarctica soil (Brevundimonas sp.) was also detected in the Antarctic aerosol. The two snow samples from the Alps only shared one common microorganism. Most of the identified microorganisms have been detected previously in cold environments (Dietzia kujamenisi, Pseudonocardia Antarctica, Hydrogenophaga palleronii and Brebundimonas sp.), marine sediments (Aquiflexus balticus, Pseudomonas pseudoalkaligenes, Pseudomonas sp. and one uncultured Alphaproteobacteria), and soils and rocks (Pseudonocardia sp., Agrobactrium sp., Limnobacter sp. and two uncultured Alphaproteobacetria clones). Air current dispersal is the best model to explain the presence of very specific microorganisms, like those used in this work, in very distant environments. In addition these microorganisms have to be resistant to extreme conditions and able to grow in oligotrophic environments. Considering the habitats in which they have been identified, the presence of pigments must be related with their ability to resist high doses of radiation. |
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355 |
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Copernicus Publications |
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ISSN |
1810-6285 |
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yes |
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Call Number |
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Serial |
2722 |
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Title |
Global atmospheric carbon budget: results from an ensemble of atmospheric CO2 inversions
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Type |
Journal Article |
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Year |
2013 |
Publication |
Biogeosciences Discussions |
Abbreviated Journal |
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Volume |
10 |
Issue |
3 |
Pages |
5301-5360 |
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416 |
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1810-6285 |
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yes |
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4444 |
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Author |
Rousseau D.D., Schevin P., Duzer D., Jolly D., Cambon G. & Ferrier J. |
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Title |
Long distance pollen transport to southern Greenland: Is there a regular pattern? |
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Journal Article |
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Year |
2005 |
Publication |
Biogeosciences discussions |
Abbreviated Journal |
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2 |
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Pages |
829-847 |
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Programme |
349 |
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Bachelor's thesis |
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ISSN |
1810-6277 |
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yes |
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3056 |
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Author |
Elster, J., R. Delmas, J.R. Petit , and K. Rehakova, |
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Composition of microbial communities in aerosol, snow and ice samples from remote glaciated areas (Antarctica, Alps Andes.Biogeosciences Discussions |
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Journal Article |
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2007 |
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Biogeosciences discussions |
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4 |
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Pages |
1779-1813 |
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Abstract |
Biogeosciences Discussions (EGU) |
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Programme |
355 |
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Bachelor's thesis |
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1810-6277 |
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Serial |
5172 |
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Author |
Barrio I.C., Hik D.S., Charrier M., Frenot Y., Renault D. |
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Title |
Adaptations of a native Subantarctic flightless fly to dehydration stress: more plastic than we thought? |
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Journal Article |
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Year |
2014 |
Publication |
Czech Polar Reports |
Abbreviated Journal |
1805-0689 |
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Volume |
4 |
Issue |
2 |
Pages |
123-128 |
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136 |
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1805-0689 |
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5870 |
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Author |
Bart Van de Vijver, Carlos E. Wetzel, Luc Ector |
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Title |
Analysis of the type material of Planothidium delicatulum (Bacillariophyta) with the description of two new Planothidium species from the sub-Antarctic Region |
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Journal |
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Year |
2018 |
Publication |
Fottea |
Abbreviated Journal |
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Volume |
18 |
Issue |
2 |
Pages |
200-211 |
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136 |
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ISSN |
18025439, 18054927 |
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18025439, 18054927 |
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yes |
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7458 |
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